Yarn-compressing mechanism



YARN COMPRESS ING MECHANISM Filed Dec. 24. 1926 1 7 1 .21 15 g j 7 a i 1 l 5 V E u- 9 a 1 0// 1' 1 IL Lfi I40 fi ial/ Patented Oct. 29, 1929 UNITED STATES PATENT OFFICE ARTHUR L. REMINGTON AND RAYMOND C. LONGVALL, OF WORCESTER, MASSACHU- SETTS, ASSIGNORS TO WARP COMPRESSING MACHINE COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACEUSETTS YARN-COMPRESSING MECHANISM Application fi1ed December 24, 1926. Serial No. 158,852.

Our invention relates to yarn compressing mechanism particularly adapted for use in connection with that type of textile machinery known as slashers. As ordinarily constructed, a slasher provides means for sizing and drying warp threads and for windin the threads on a beam, or drum, rotatably driven at the end of the machine.

Our invention contemplates an improved arrangement for driving the warp beam, or drum, and for tightly compressing the warp threads wound thereon, so that a maximum amount of warp material may be wound on a beam of given size. -The above and other advantageous features of our invention will hereinafter more fully appear, reference being had to the accompanying drawings in which Fig. 1 is a view in side elevation of a portion of a slasher embodying our invention, parts being removed to show the gearing.

. Fig. 2 is a view in front elevation of the parts shown in Fig. 1.

Like reference characters refer to like parts in the different figures.

referring first to Fig. 1, a portion of one frame of the winding or beaming end of a slasher is shown at 1 and the warp 2 which has been sized is indicated as moving from the stream drum, not shown, to the beaming end in the direction of the arrow. A drawing roll 3 is carried by a shaft 4 journalled on the frame 1 and the shaft 4 is driven in a clockwise direction as viewed in Fig. 1, from any suitable source of power, not shown. Brackets 5 are provided on opposite sides of the shaft 4 and these brackets receive the reduced ends of small pressure rolls 6, 6, which rest on the upper portions of the periphery of the drawing roll 3. The warp 2 passes over the small rolls 6 and under the drawing roll 3, and the pressure of the freely supported rolls 6 on the drawing roll 8 is sufficient to insure that the warp will be held taut and positively driven up to the point where it leaves the roll 6 and passes to our improved compressing mechanism which will now be described.

The frame 1 provides end brackets 7 for rotatably supporting the shaft 8 of a beam or ylinder 9 and in slashers as previously constructed it has been customary to carry the warp 2 directly to the top of the beam 9 from the left and pressure roll 6 while driving the beam 9 in a direction of rotation opposite to that of the drawing roll 3. lVith this arrangement, ithas been very difficult to tightly compress the warp 2 as it was laid on the top of the beam 9 by reason of the fact any compressing device must operate on the lower part of the beam so the operator can always have free access to the top and front of the beam 9 when changing the same.

According to our invention we propose to compress the warp 2 on the beam 9 at the point on the lower side of the beam 9 where the warp threads 2 are tangent to the periphery of the beam cylinder as they pass onto the beam from the left hand pressure roll 6. To this end the beam 9 is driven in the same direction of rotation as the drawing roll 3, the drive for the beam 9 being taken from the shaft 4 of the roll 3. As best shown in Fig. 1, in which parts have been broken away to show the gearing, the shaft 4 carries a gear 10 in mesh with a gear 11 carried on a countershaft 12. The intermediate gear 11 is in turn in mesh with a gear 13 mounted on the shaft 8 of the beam 9. The ratio between the gears 10, 11 and 13 is such that the gear 13 tends to be driven at asomewhat greater speed of rotation than the shaft 4 and a frictional drive hereinafter described is provided between. the gear 18 and the beam shaft- 8.

As best shown in Fig. 2, the machine is provided at its left hand end vith a low pedestal'14 secured to the end frame 1 and substantially forming a part thereof. The pedestal 14 provides bearings 15 for rotatably supporting an extension of the beam shaft 8, the gear 13 being carried between the bearings 15. The pedestal 14 also provides upwardly extending arms 16, the upper endsof which provide bearings 17 for the countershaft12. The pedestal 14 is outlined in, dotted lines in Fig. 1, from which it is seen that the pedestal 14 also provides arms 18 for rotatably supporting the extension of the drawing roll shaft 4 which carries the gear 10.

Friction plates 19, 19 are mounted on the shaft 8 on opposite sides of the gear 13, and the shaft 8 is oppositely threaded at 20 and 21, so that the plates 19 may be turned to bring them into frictional engagement with opposite faces of the gear. By means of the plates 19 the amount of power transmitted to the beam shaft 8 may be varied in accordance with the amount of pull which it is desired to exert on the warp as it is wound on the beam 9. The frictional drive between the gear 13 and the beam shaft 8 is shown in its simplest form, for purposes of illustration, and obviously, other types of frictional drive can be employed for the same purpose without departing from our invention.

Referring again to Fig. 1, a compressing roll 22 is carried by arms 23 pivotally mounted on a shaft 24, the roll 22 extending the length of the beam 9 and the shaft 24 being rotatable in bearings 25, so that the arms 23 may be turned to hold the roll 22 in engagement with the underside of the beam 9. The compressing roll 22 is freely supported on a pair of anti-friction rollers 26 carried by each arm 23, so that when the roll 22 is pressed against the warp being wound on the beam 9 it will exert substantially no braking effect. The shaft 24 is so disposed that when it is turned to move the arms 23 toward the beam 9, the compressing roll 22 will engage the warp being wound on the beam 9 at substantially the point of tangency of the warp threads 2 to the cylinder. The are of movement of the compression roll 22 about the shaft 24 is such that, within the range between a full beamand an empty beam, the pressing roll 22 remains near a'point of tangency to the cylinder as the warp is wound thereon.

In order to cause the compression roll 22 to exert a pressure on the warp, the shaft 24 is provided with a lever 27, the free end of which is connected to a chain 28 passing upwardly around a pulley 29 supported above the mechanism. The end of the chain 28 on the other side of the pulley 29 carries a weight 30 which exerts upward pull on the chain 28 and causes the compression roll 22 to be pressed against the warp being wound on the beam 9 with a considerable force. The weight 30 is adjustable to permit variations in the pressure which the roll 22 exerts on the 1 warp. Obviously, other means may be employed for pressing the roll 22 against the warp without departing from our invention.

' From the foregoing it is apparent that when the slasher is operating and the completed warp is delivered by the drawing rolls 3 and 6, the warp will be wound tightly on the beam 9. We have found that the amount of yarn which may be wound on the beam 9 when using the compressing roll 22 will be considerably greater than the amount which can be wound on beams previously employed in connection with the Slashers. We attribute this increased capacity of the warp beams entirely to the fact that the roll 22 always exerts a pressure on the warp at substantially the point of tangency of the warp to the periphery of the beam cylinder. Furthermore, it is apparent from Fig. 1 that the compression is obtained without in any way interfering with the operation of the slasher, inasmuch as there are no parts which in any way shut off access to the end of the machine when it is desired to remove a full warp beam therefrom.

lVe claim:

In a machine of the class described, the combination with a frame supporting a rotatably driven roll adapted by its rotation to draw warp material from a source of supply, a forward extension on said frame on which is rotatably mounted a warp beam with its axis of rotation disposed in front of and below said drawing roll so that said beam when full is entirely clear of the end of the frame portion which supports said drawing roll and means for driving said beam in the same direction of rotation as-said drawing roll to wind warp material thereon as it passes downwardly from said drawing roll between the axis of said drawing roll and said beam, of means for compressing the warp material on said beam at points below the axis of said beam where the material passing downwardly from said drawing roll is tangent to the periphery of said beam, or the material wound thereon, whereby said beam when full may be removed without disturbing said drawing roll, or said compressing means.

ARTHUR L. REMINGTON. RAYMOND C. LONGVALL. 

